Q 1. Where would you normally use timber newel post caps ?
On top of a 115 x 115mm post on a staircase to dress it up.
Q 2. What is it made out of ?
Q 3. What are the important dimensions ?
Overall : 60mm Height x 168mm Width x 168mm Depth
On the bottom there is a 115 x 115mm rebate that allows the cap to fit over the post.
Q 4. How should you finish it ?
If looking for a natural finish, then a clear lacquer will be fine
Speak to your local paint retailer for more info.